SEATTLE (AP) — Western Washington University President Bruce Shepard acknowledged Monday that the school is facing challenges when it comes to student drug and alcohol use, but he says an off-campus melee that erupted Saturday is counter to the university’s culture.

Three non-students have been arrested by Bellingham police but the investigation continues into an off-campus party that turned into a riot.

The university is working with the police to help find any young people who threw things during efforts to break up the riot, Shepard said. If any students were involved in criminal disruptive behavior, they will face university discipline up to expulsion.

Shepard is worried Western will gain an unwarranted reputation for being a party school.

“We are simply stunned that this would happen in Bellingham,” Shepard said.

Bellingham Police said Monday morning that they have several detectives working on the case but had no updates to share.

Shepard said the school works hard to avoid a party atmosphere, making sure prospective students know the campus has no fraternities and is focused more on community service than partying.

“I really believe the vast majority of our students are actually disgusted by this,” he said.